site: rename "finds" superpost collection to "bundles"

Disambiguates the one-letter `find` (item) vs `finds` (roundup) split that
kept causing confusion. Audience-facing now: `/bundles/<slug>/`, "Bundle"
labels in home/footer/search.

Internals: `getCollection('finds')` → `('bundles')`, `Entry.type 'finds'`
→ `'bundle'`, `OgFallback 'finds'` → `'bundles'`, `findListMosaic` →
`bundleMosaic`, `FindsPost` → `Bundle`, `findsReferencing` →
`bundlesReferencing`. Build script + generated mosaic dir follow
(`scripts/build-bundle-mosaics.mjs`, `src/generated/bundle-mosaics/`).

Skills `build-finds` → `build-bundle`, `cluster-finds` →
`cluster-bundles`. The `find` collection (individual items) is unchanged.

No URL redirects: low external-link surface area.

src/pages/index.astro

@@ -4,10 +4,10 @@ import { Image } from 'astro:assets';
 import BaseLayout from '../layouts/BaseLayout.astro';
 import Masonry from '../components/Masonry.astro';
 import { heroes } from '../lib/hero';
-import { findListMosaic } from '../lib/find-list-mosaic';
+import { bundleMosaic } from '../lib/bundle-mosaic';
 import { buildOgImage, buildItemList, WEBSITE, ORGANIZATION } from '../lib/seo';
 
-const HERO_SLUG = 'monitorcontrol';
+const HERO_SLUG = 'gum-shell';
 const INITIAL_GRID = 12;
 const BATCH_SIZE = 7;
 
@@ -22,23 +22,23 @@ type Tile =
       hero: ReturnType<typeof getReviewHero>;
     }
   | {
-      kind: 'list';
+      kind: 'bundle';
       href: string;
       id: string;
       name: string;
       subtitle: string | undefined;
       date: Date;
       itemCount: number;
-      mosaic: ReturnType<typeof findListMosaic>;
+      mosaic: ReturnType<typeof bundleMosaic>;
     };
 
 function getReviewHero(slug: string) {
   return heroes[slug];
 }
 
-const [reviews, lists] = await Promise.all([
+const [reviews, bundles] = await Promise.all([
   getCollection('reviews'),
-  getCollection('finds'),
+  getCollection('bundles'),
 ]);
 
 const reviewTiles: Tile[] = reviews.map((review) => ({
@@ -51,18 +51,18 @@ const reviewTiles: Tile[] = reviews.map((review) => ({
   hero: getReviewHero(review.id),
 }));
 
-const listTiles: Tile[] = lists.map((list) => ({
-  kind: 'list' as const,
-  href: `/finds/${list.id}/`,
-  id: list.id,
-  name: list.data.title,
-  subtitle: list.data.blurb,
-  date: list.data.date,
-  itemCount: list.data.items.length,
-  mosaic: findListMosaic(list.id),
+const bundleTiles: Tile[] = bundles.map((bundle) => ({
+  kind: 'bundle' as const,
+  href: `/bundles/${bundle.id}/`,
+  id: bundle.id,
+  name: bundle.data.title,
+  subtitle: bundle.data.blurb,
+  date: bundle.data.date,
+  itemCount: bundle.data.items.length,
+  mosaic: bundleMosaic(bundle.id),
 }));
 
-const tiles: Tile[] = [...reviewTiles, ...listTiles].sort(
+const tiles: Tile[] = [...reviewTiles, ...bundleTiles].sort(
   (a, b) => b.date.valueOf() - a.date.valueOf()
 );
 
@@ -130,7 +130,7 @@ const itemList = buildItemList(
           tile.kind === 'review' ? tile.hero : tile.mosaic ? { kind: 'image' as const, src: tile.mosaic } : undefined;
         return (
           <article>
-            <a href={tile.href} class:list={['tile', { 'text-only': !visual, 'is-list': tile.kind === 'list' }]}>
+            <a href={tile.href} class:list={['tile', { 'text-only': !visual, 'is-bundle': tile.kind === 'bundle' }]}>
               {visual?.kind === 'image' && (
                 <Image
                   class="media"
@@ -155,8 +155,8 @@ const itemList = buildItemList(
                 />
               )}
               <div class="text">
-                {tile.kind === 'list' && (
-                  <span class="eyebrow">List · {tile.itemCount} picks</span>
+                {tile.kind === 'bundle' && (
+                  <span class="eyebrow">Bundle · {tile.itemCount} picks</span>
                 )}
                 <span class="name">{tile.name}</span>
                 {tile.subtitle && <span class="subtitle">{tile.subtitle}</span>}
@@ -260,7 +260,7 @@ const itemList = buildItemList(
       color: var(--accent);
       font-weight: 600;
     }
-    .tile.is-list .name {
+    .tile.is-bundle .name {
       font-family: ui-serif, Georgia, 'Iowan Old Style', 'Apple Garamond', 'Palatino Linotype', serif;
       font-weight: 700;
       font-size: 1.15rem;